package ch05;class 类人猿 {
	void crySpeak(String s) {
		System.out.println(s);
	}
}
class People9 extends 类人猿 {
	void computer(int a,int b) {
		int c = a*b;
		System.out.println(c);
	}
	void crySpeak(String s) {
		System.out.println("***"+s+"***");
	}
}
public class Example5_10 {
	public static void main(String args[]) {
		类人猿 monkey;
		People9 geng = new People9();
		monkey = geng; //mokey是People对象geng的上转型对象
		monkey.crySpeak("I love this game");
		//等同于geng.crySpeak("I love this game")
		People9 people=(People9)monkey;	//把上转型对象强制转化为子类的对象
		people.computer(10,10);
	}
}
